Rage.

So my sister is 19 years old and living with her high school boyfriend. She's still not done with high school, which is fine, she can finish at her own pace. But this person who commented is the boyfriend's mother, who is already pushing her into the idea of marriage within the next year.
My sister is definitely a people pleaser. This woman is now casually joking about my still-in-high-school sister about getting married and having a child before even considering what her own goals are. My sister has said she feels pressured, and the boyfriend had some kind of tinder profile or something he was talking to other girls with.
I don't know. I hate this. I just want her to make up her own mind about her life, and that's why I've backed off. But I know she listens to the boyfriend's mom every day, and I worry a lot. Help.